Classifications

• • C—CHEMISTRY; METALLURGY
  • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
  • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
  • C25D21/00—Processes for servicing or operating cells for electrolytic coating
  • C25D21/12—Process control or regulation
• • C—CHEMISTRY; METALLURGY
  • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
  • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
  • C25B15/00—Operating or servicing cells
• • C—CHEMISTRY; METALLURGY
  • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
  • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
  • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
  • C25D5/18—Electroplating using modulated, pulsed or reversing current
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/44—Methods for charging or discharging
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M4/00—Electrodes
  • H01M4/02—Electrodes composed of, or comprising, active material
  • H01M4/14—Electrodes for lead-acid accumulators
  • H01M4/16—Processes of manufacture
  • H01M4/22—Forming of electrodes
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/10—Energy storage using batteries

Definitions

• This invention relates to a method of assessment of the effect of periodic inversion of D.C. current polarity in electrochemical processes. Such method is applicable in the electroforming of accumulator plates; the charging of Fouire plate and "Exide” accumulator batteries; the electrochemical oxidation of dimethylketone sorbose in the production of a Vitamin-C; the electropurification of process waters; and the electrodeposition of coatings.
• a disadvantage of the above said method consists of the requirement of performing the complete electrochemical process, which often occupies dozens of hours.
• Another disadvantage is that the effect must be established by means of additional analytical methods as, for example, a chemical method in determining the contents of spongy lead and of lead dioxide.
• both the electrochemical processes and the methods of recording the effect are labor-consuming, entail significant amounts of time, and require the use of additional specific apparatuses for the carrying out of the chemical analyses.
• Such analyses are also difficult, as is the creation of conditions and parameters of the electrochemical systems in order to provide for repeatability.
• the object of this invention is to provide a simplified method of assessment of the effect of the periodical inversion of current polarity in electrochemical processes, in which the time for carrying out the assessment is significantly reduced.
• the advantage of this method is, that the measuring of a single parameter under control and the recording of its variation are sufficient for the assessment of its influence in the electrochemical process.
• the variation of the controlled parameters can be conveniently and quickly recorded through a conventional recorder and, accordingly, its influence on the electrochemical processes at different values of the current both in forward and inverse directions, at different concentrations of the electrolyte and of solutions, and at different shapes of the current, can be established immediately.
• the variation of the current, or of the voltage during the periods of charging and of discharging current is automatically recorded.
• the duration of the periods of current flow in opposite directions is changed and the variations of the parameters under control are recorded and analyzed once more.
• This variation automatically demonstrates the effect of current polarity inversion, and more particularly, the effect of the duration of the periods of charging and discharging current, on the variation of the active resistance in the formative baths.
• Variations of the charging current, discharging current and active internal resistance as functions of the variation of the charging current period, discharging current period, shape of transitional regimes and shape of the current employed, are read immediately, with constant parameters of the electrochemical system--with a chemically identical paste, with one and the same charging current, and with one and the same arrangement of the electrodes.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Manufacturing & Machinery (AREA)
• General Chemical & Material Sciences (AREA)
• Automation & Control Theory (AREA)
• Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
• Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
• Battery Electrode And Active Subsutance (AREA)
• Securing Of Glass Panes Or The Like (AREA)
• Thermal Transfer Or Thermal Recording In General (AREA)
• Details Of Aerials (AREA)
• Water Treatment By Electricity Or Magnetism (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=3904842

Family Applications (1)

Country Status (10)

Cited By (3)

Families Citing this family (5)

Citations (6)

• 1978
  • 1978-06-06 BG BG7839984A patent/BG26638A1/xx unknown
• 1979
  • 1979-05-22 SU SU797770568A patent/SU907642A1/ru active
  • 1979-05-23 SE SE7904509A patent/SE7904509L/xx not_active Application Discontinuation
  • 1979-05-23 CS CS793575A patent/CS237753B1/cs unknown
  • 1979-05-30 DD DD79213328A patent/DD161102A3/de not_active IP Right Cessation
  • 1979-06-01 DE DE19792922526 patent/DE2922526A1/de not_active Withdrawn
  • 1979-06-04 PL PL21608879A patent/PL216088A1/xx unknown
  • 1979-06-04 US US06/045,398 patent/US4216064A/en not_active Expired - Lifetime
  • 1979-06-06 GB GB7919730A patent/GB2022617B/en not_active Expired
  • 1979-06-06 JP JP7106579A patent/JPS5526492A/ja active Pending

Patent Citations (7)

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